Groups not showing

Hi there,
I’ve been using this plugin for a while on several pages for our various membership groups and it’s been great but now I am getting an error on every page where I’ve got the shortcode embedded:
You do not have permission to access this content. (#418)

I’m not sure what’s up but wondering if you have any suggestions?
Thanks,
Allyson

The page I need help with: [log in to see the link]